<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref="loginFormRef" :model="loginFrom" :rules="loginFormRules" label-width="70px" class="login_form">
                <!-- 用户名 -->
                <el-form-item label="用户名:" prop="username">
                  <el-input v-model="loginFrom.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item label="密码:" prop="password">
                  <el-input type="password" v-model="loginFrom.password" prefix-icon="iconfont icon-3702mima"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item label-width="0px" class="btns">
                   <el-button type="primary" @click="login" round>登录</el-button>
                   <el-button type="info" @click="resetLoginForm" round>重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data(){
        return{
            //这是登录表单的数据绑定对象
            loginFrom: {
                username:'admin',
                password:'123456'
            },
            //表单的验证规则
            loginFormRules: {
                //验证用户名是否合法
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' } 
                ],
                //验证密码是否合法
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' } 
                ]
            }

        }
    },
    methods:{
        //点击重置，重置登录表单
        resetLoginForm(){
            // console.log(this);
            this.$refs.loginFormRef.resetFields();
        },
        //登录
        login(){
            this.$refs.loginFormRef.validate(async valid=>{
                if (!valid) return;
                const {data:res}= await this.$http.post("login",this.loginFrom);
                if(res.meta.status !==200) return this.$message.error('登录失败');
                this.$message.success('登录成功');
                console.log(res);
                //将token保存到客户端的sessionStorage中
                window.sessionStorage.setItem("token",res.data.token);
                //跳转页面
                this.$router.push("/home");
            })
        }
    } 
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}

.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 5px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}

.avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    // overflow: hidden;
    box-shadow: 0 0 13px #ddd;
    padding: 5px;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background-color: #fff;
    img{
        width: 100%;
        height: 100%;
        background-color: skyblue;
        border-radius: 50%;
    }
}

.btns{
    display: flex;
    justify-content: flex-end;
}

.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding-right: 20px;
    box-sizing: border-box;
}
</style>

